Mute Signal Circuit between Radio Receiver and Stereo Component Amplifier

AUDIO / VISUAL: AUDIO AND VISUAL SYSTEM: Mute Signal Circuit between Radio Receiver and Stereo Component Amplifier

Mute Signal Circuit between Radio Receiver and Stereo Component Amplifier

DESCRIPTION

The circuit sends a signal to the stereo component amplifier to mute noise. Because of that, the noise produced by changing the sound source ceases.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK WIRE HARNESS (RADIO RECEIVER - STEREO COMPONENT AMPLIFIER)





(a) Disconnect the K54 receiver connector.
(b) Disconnect the U29 amplifier connector.
(c) Measure the resistance of the wire harness side connectors.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
2. INSPECT STEREO COMPONENT AMPLIFIER ASSEMBLY
(a) Replace the stereo component amplifier and check if it operates normally.
OK:
The audio system operates normally.
NG -- OK (REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY)
OK -- REPLACE RADIO RECEIVER ASSEMBLY